On Sun, Aug 30, 2020 at 06:08:36PM +0100, dave wrote:
> A simple equivalent of mynetworks, but for a from address rather than an
> IP/network would be ideal.
There is, for good reason, no relay authorisation based on sender
address, because unlike a source IP address on your network (which is
difficult to forge with TCP) without being on your network, a sender
address is trivially forged by just using it. Sender addresses are
neither secret not difficult to forge.
Thus permit_mynetworks (and thus mynetworks) is a thing, but there
is no permit_sender_domain (nor thus mydomains).
--
Viktor.
